| article html file updated | 7 February 2020 02:11 CET | Update | https://www.mdpi.com/2078-2489/6/4/866 |
| article html file updated | 6 May 2019 05:05 CEST | Update | - |
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| article pdf uploaded. | 14 December 2015 11:58 CET | Version of Record | https://www.mdpi.com/2078-2489/6/4/866/pdf |
| article xml uploaded. | 14 December 2015 11:58 CET | Original file | https://www.mdpi.com/2078-2489/6/4/866/xml |
